Regulator for air or gas currents



Feb. 16 1926.

L. KUJAWA El AL REGULATdR FOR AIR 0R GAS CURRENTS Filed Jan. 9, 1923- fM 1 @WM Patented Feb. 16, 1926.

UNITED STATES LORENZ KUJAWA AND OTTO KOOK, OF MAGDEBUBG, GERMANY.

REGULATOR FOR AIR 0R GAS GURRENTS.

Application filed January 9, 1923.

To all whom it may concern:

Be it known that we, LORENZ KUJAWA and'OT'ro KooK, citizens of Germany, and residents of Magdeburg, Germany, Kleine Junkerstr. 4 and Knochenhauerufer 46, have invented certain new and useful Improvements in Regulators for Air or Gas Currents, for which we have applied for the following patent, Germany K. 80101 V/Ql from 6 December, 1921; and we do hereby declare that the following is a full, clear, and exact specification, reference be ing had therein to the accompanying drawing.

The invention relates to a device for regulating currents of air or gas which flow with varying velocities, and a special use consists in theappli'cation with the chimneys of locomotives for avoiding unequal blowing of the fire and for extinguishing the sparks.

It is known to use a guiding spiral and two fans or blade wheels having perforated blades and arranged on a common axis inside an enlarged chimney part, and driven by the gas current in inverse sense, but a mischief consisted therein that either the current 'was too hardly throttled or the sparks were not extinguished and such devices need an enlargement of the chimney, which cannot be provided in the short chimneys of modern locomotives. The invention consists in providing exclusively two inversely rotating fans, the blades of which cover the whole diameter of the chimney and are provided with perforations to such an extent that a good spark destroying and current regulating action is obtained without much throttling the current. Further special ball bearings are provided which allow of extremely high numbers of revolu tions of the blade wheels without suffering by the dust and heat in a chimney.

The invention is shown by way of example in the accompanying drawing, which is a side view, partly in section, the chimney or flue being indicated at Z in dotted lines.

Two blade wheels A and B are rotatably held on an axially disposed rod 0 and secured against axial displacement. The upper blade wheel A has seven blades of a greatbreadth, as shown in the drawing, so that the diameter of the funnel or chimney is nearly covered by the blades and every passing air part or spark is hurt by them it g e t certa y,- e swirling 00 Serial No. 611,669.

hard throttling of the current and a too quick revolution of the blade wheel the blades are perforated by rhombic holes, so as to be similar to an equally perforated sieve, by which neither sparks of some size nor explosive gases in mines are allowed to pass uncooled.

The lower blade wheel B is constructed in the same manner with the exception that it is somewhat smaller and has only five blades, for influencing firstly the greater passing bodies.

The sense of pitch of the under blade wheel is inverse to that of the upper, so that no circulating or spiral movement of the air current arises, and all its parts are surely hurt by the both combined blade wheels.

The fastening device for holding the regulator in a funnel consists in an arm cross D secured to the lower part of the rod C, and containing pressure screws E, and a similar device may be provided at the upper end, in case that the regulator is destined to be fastened in the interior of a funnel. In the shown example the upper end of the rod C is provided with an arm cross F having screw holes G, and slotted outer arms H are held by screws inserted in some ofthe said holes so as to furnish the desired adaptability of length. These adaptable arms H are provided at their upwardly bulged ends I with inwardly directed pressure screws K. Hereby the regu lator may be attached at sheet metal funnels by mounting the upper arm cross over the funnel edge and setting it under tension by aid of the screw bolts K screwed against the outer funnel face.

u The ball bearlugs consist of three sets of balls L, M and N, and one ball race ring 0 of the hub P of the blade wheel is interposed between two ball sets L and M, whilst further hall race rings (Q, R, S and T are held at a sleeve U, fixed on the rod C, so as to include the balls. Thereby the hall sets L and M act as a double thrust hearing and simultaneously as a radial bearing, and the ball set N acts as a second radial hearing. Caps V and W are so fastened at both ends of the sleeve U, that they nearly touch the outer face of the hub P and thereby protect the whole ballbearing againstdust and exzessive heat from the gases passing outs1 e.

In use with locomotive chimneys the new current regulator has proven of surprising advantage in so far as'it not only extinguishes the sparks by shattering them, but moreover causes the blowing up of the fire grow'ng so equal that practically no unhurnt coal parts fly up from the grate to the smoke box and chimney, and thereby a remarkablesaving of coal is reached.

W hat We claim is:

1.. A regulator for air and currents comprising a pair of elements mounted for rotation independently of each other and arranged to be placed in a fl;ue,:eaeh of said elements having fan plates provided throughout their extent nflth perforations, the plates of one of said elementsbeing reversely shaped to those of the other element so that said elements are .caused to rotate in reverse directions, the loner element heing of less diameter than the upper element and the diameter of the upper element belower element being somewhat less than that. of the upper element, and means to which said shaft is secured and arranged to mount the said revoluble elements and said shaft .in a flue. t

In witness whereof we aflix our signatures.

LORENZ. KUJAv'l UL. OTTO KOOK. 

